The Prophet (peace and blessings be upon him) said:
"No one (performing Hajj) should depart until his last act is the circumambulation (tawaf) of the House of Allah."
Hadith Referenceصحیح الجامع الصغیر / حرف اللام ألف / 7805
Hadith Gradingالألبانی:صحيح
Hadith Takhrij[حم د هـ] عن ابن عباس [هـ] عن ابن عمر. مختصر مسلم ٧٥٣.